Terminal connection



`is in contact with the upper end of UNITED STATES earner breien,

HOHER W. JONES, 0F LAKEWOOD, OHIO, ASSIGNOR T0 NATONAL CARBON' COMPANY.

i INC., A CORPORATION 0F YORK.

TERMINAL CONNECTION.

Specification of Letters Patent.

Patented May s, i921.

Application filed October 10, 1919. Serial No. 329,833.'

nections, of which the following is a full,-

clear, and exact description.

The present invention relates to an improvement in terminal connections for the carbon electrode of dry cells.

A connection of this kind which is widely used is that shown in U. S. Patent 813,093 to E. C. Henn and is commonly known asy the driven dowel terminal. The present terminal and improvements embodied therein utilizes and is especially applicable to the driven dowel constinction. The principal objects of the invention are to decrease thecost, shorten the carbon electrode, improve the appearance anddecrease the twisting strain on the dowel.

Additional advantages will appear in the following description of several speciic embodiments of the invention, referencebe ing had to the drawings in'which Figure l is a fragmentary cross section of the construction which at present is the preferred form.

Fig. 2 illustrates a modification.

The construction is illustrated in connec-l tion with a dry cell consisting of a zinc container electrode l having a paper lining 2, mix 3 and layer of sand 4. In accordance with the present invention I utilize a central carbon electrode 5 which has the upper end below the upper edge of the lzinc container. The terminal preferably consists of a driven dowel having a ribbed portion 6 forced into a hole in the upper end of the carbon electrode. The dowel is forced into the electrode so that the upper surface of the shoulder 7 is even with or a little above the upper edge of the zinc can and the threaded stud Bprojects therefrom. A brass cap 9 having a small hole in the top and a' flange l2 at the bottom of the skirt l0 is then fitted over the threaded stud, the di-' i mensions oi the cap preferably being such that the flange of the depending skirt .10

the-car bon electrode while the top contacts with theA shoulder .7. The seal isv 'then pouredY into the canto lill the upper end wl 1i ch e1nv said electrode having abore therein, a

beds and holds the electrode and shirt 'of the cap securely therein.

The'carbon electrode required with this connection is shorter and therefore less expensive than that used with the ordinary driven dowel construction. By embedding the end in the seal the finished cell has a neater appearance and the carbon electrode cannot become loosened. The cap which is made of thin stamped sheet metal is relatively inexpensive. When a nut is applied to the threaded member the cap tends to prevent the dowel from becoming loosened` by twisting in a hole due to the application ofunnecessary force. This is due tothe fact that after the nut i`s turned down tight against the cap the dowel cannot be twisted wlthout also turning the cap. As the cap is held by the seal an additional means is thus provided resisting any turning oi the dowel in the carbon electrode.

YInthe modification shown in Fig. 2 a driven dowel is utilized having a wide shoulder 1l which replaces the shoulder 7 and cap 9. In this form the end of the electrode isY embedded in the seal and the shoulder rests on the upper end ci the elec'- trode and projects-from the seal.

The forms described appear to be the most simple and satisfactory and further modifications within the scope of the claims and the limits of the invention will not be described in detail. y

Having described my invention, what l claim is 1. A dry cell comprising a container, a

"seal in said container, an electrode extend-l ing into said container and having its upper end below the upper surface of the seal. dowel having a. ribbed portion forced in said bore in retaining engagement with the electrode and a portion projecting from .said seal adapted to receive suitable means for attaching a conductor to the projecting pormember located above the upper end ofthe electrode between the ribbed and projected portions et the dowel, said vmember having a portion embedded tion, and a metallic to coperate with said means.. x

` y'2. A dry cell comprisinga container, a seal 1n the upper end of the containenjan elecv trede extending into saidontainer andhavin the seal and an exposed portion adapted lili) ing its lippe? and below an'"i1} upei sui-'face of the seal, said eiactrode having, terminal 'retaining means, :f1 tfeiiiina having L p01'- tion in `enggzagel'fient 'with Ldie terminal retaining means, arid aA poivtion. projecting from said seal adapted to receive clamping means, and a metalic cap membeihlocated 'above the upper and, of the. electrode, said cap having a @pending miit in coni-ct with .he end of the eiecrocie and embedded in the seal, and am exposd iop havingn opening adaped 'to periii't ihn erminai men'ibel' to be passed tlfierethi'm'xgiz,

A dry Gail comprising' a container, :i Sea? in the lippe? and. of the coni/nina; 1L carbon alecm-0de exendingnto said cont-mmf und having iis uppnd beiow h@ upper sur-- face 0f Life Semi; Said cmgbon eimieroe haw ing a bom herain', a GWel ha" a potin in said bore in lomining engnggenient Wifii the carbon electrode :find :1 Liirwuiwi portion pi'njec from said Seal udup'ed m wcive a clamping um? und a simiidw' between Suid wirtim, the: upper sui'j'zicv oi said Shoulder living substzmtizi, i5' fills!) with the'upper sui-fewo of the smh and i; nwtfaiiic cap member ima-ated above tim upper @mi of the electrode, said up having' u @winding skirt 'in Contact with im uppm and. m" the eiectrodcgund Hi'ilwfidcfi in tim Smil, :imi zi tvp resting' in the {iowa} shouhiez" said fop having 1111 opening' zuinptwi in pm'mil; tha /iueudod moix'ibfii' to pass thoi'vhrmlgjii, said tup piojcctingf from the smi :,m-:l .idzsped tu serve :is n; .scat for zi dumping nut In flstimony whereof, Herminio 'eix my signature. Y

i. W. JUN. 

